| (21) | N° Dépôt : 44302 |
| (22) | Date de Dépôt : 20.06.2017 |
| (30) | Données de Priorité : 06.07.2016 FR 1656460 |
| (86) | Données relatives à l'entrée en phase nationale selon le PCT : PCT/FR2017/05163020.06.2017 |
| (71) | Demandeur(s) : SAIPEM S.P.A, Via Martiri di Cefalonia, 67 20097 San Donato Milanese (MI) (IT) |
| (72) | Inventeur(s) : ZIELINSKI EriC ; TRICHARD Nathalie ; BELLANDE, Julien ; RODIER Benjamin |
| (74) | Mandataire : M. MEHDI SALMOUNI-ZERHOUNI |
| (54) | Titre : PROCÉDÉ DE LIQUÉFACTION DE GAZ NATUREL ET DE RÉCUPÉRATION D'ÉVENTUELS LIQUIDES DU GAZ NATUREL COMPRENANT DEUX CYCLES RÉFRIGÉRANT SEMI-OUVERTS AU GAZ NATUREL ET UN CYCLE RÉFRIGÉRANT FERMÉ AU GAZ RÉFRIGÉRANT |
| (57) | Abrégé : The invention relates to a method for liquefying natural gas comprising a mixture of hydrocarbons, including mostly methane, the method comprising a first refrigerant cycle semi-open to the natural gas in which the possible liquids from the natural gas which have been condensed are separated from the natural gas input stream, the latter then passing through a main cryogenic heat exchanger (4) in order to contribute by heat exchange to the pre-cooling of a main stream of natural gas (F-P) and to the cooling of an initial stream of refrigerant gas (G-0), a second refrigerant cycle semi-open to the natural gas in order to contribute to the pre-cooling of the natural gas and the refrigerant gas as well as to the liquefaction of the natural gas, and a refrigerant cycle closed to the refrigerant gas in order to provide the sub-cooling of the liquefied natural gas and to provide a cooling power that complements the other two cycles. The invention also relates to a facility for liquefying natural gas for implementing such a method. |
